51st Regiment of Foot (disambiguation)

51st Regiment of Foot may refer to:


 * 51st (2nd Yorkshire West Riding) Regiment of Foot, former British Army regiment, 1755-1881
 * 51st Regiment Massachusetts Volunteer Infantry, American Civil War regiment
 * 51st Indiana Infantry Regiment, American Civil War regiment
 * 51st King's Own Yorkshire Light Infantry, British Army regiment, 1881-1968